Chapter 5

Question 1

NFPA ___ : Standard on types of building construction.

Answer 1

NFPA 220

Question 2

Type V construction

Answer 2

Frame (wood)

Question 3

Type IV construction

Answer 3

Heavy Timber

Question 4

Type III construction

Answer 4

Ordinary Construction

Question 5

Type II construction

Answer 5

Noncombustible

Question 6

Type I construction

Answer 6

Fire Resistive

Question 7

Type V : Wood Frame… 5 types

Answer 7

Balloon Frame
Platform Frame
Post and Beam
Plank and Beam
Truss Frame

Question 8

The main point to remember in the performance of wood as a structural member is ___.

Answer 8

Surface to mass ratio

Question 9

___ is the key factor in fire performance of wood.

Answer 9

Mass

Question 10

Type V construction… ___ was common throughout building construction from the 1800’s to the end of WW2.

Answer 10

Balloon Frame

Question 11

Type V construction… Sometimes called western framing, is the most common type of new frame construction in use today.

Answer 11

Platform Frame

Question 12

Platform frame construction can be used on building up to ___ stories.

Answer 12

3

Question 13

The ___ is a typical post and beam construction.

Answer 13

Barn

Question 14

Barns have a ___ floor and roof system.

Answer 14

Plank and beam

Question 15

Post and Beam… Minimum dimensions for the roof planks are ___ inches with beams set ___ to ___ feet apart.

Answer 15

2”

6’ to 8’

Question 16

Post and Beam… Minimum dimensions for post and beams is ___.

Answer 16

4”x4”

Question 17

____ : similar to post and beam but uses much larger beams.

Answer 17

Plank and beam

Question 18

Type V construction… Used in large residential structures, commercial building, churches, and places of assembly.

Answer 18

Plank and Beam

Question 19

Type V construction… Floors are typically which tongue and groove planks.

Answer 19

Plank and beam

Question 20

A very common and controversial construction method is ___ construction

Answer 20

Lightweight truss

Question 21

The ___ is an engineered construction in which the entire structure is tied together into a unitized frame.

Answer 21

Truss Frame

Question 22

Truss frame structures can be built up to ___ stories.

Answer 22

3

Question 23

The hazard is that wood carries its load by mass. The truss is constructed of the lightest weight and the smallest dimension lumber possible, typically ___.

Answer 23

2”x4”

Question 24

A gusset plate is about ___ inches thick.

Answer 24

.05 inches

Question 25

Bowstring trusses can span ___ to ___ feet and spaced ___ feet on center.

Answer 25

50 to 100 20 feet

Question 26

Gusset plates can also be called gang nailers, staple plates, or metal tooth plate connectors. The metal staple is designed to penetrate the wood from ___ to ___ inches.

Answer 26

.25 to .375

Question 27

Treating wood with ___ and ___ to protect from fire caused a problem. When used in roofing systems, the plywood begins to deteriorate due to high humidity and temperature in attics an cock lofts.

Answer 27

Phosphates and Sulfates

Question 28

Type IV : heavy timber, aka ___ construction, commonly found in old industrial buildings.

Answer 28

Mill construction

Question 29

Type IV construction... The large wooden columns are greater than ___ inches and can be used for buildings up to ___ stories tall.

Answer 29

8"x8" 8 stories

Question 30

Type IV construction... The floors are typically ___ inches or greater in thickness and are built using ___ inch tongue and groove construction laid crossways.

Answer 30

3 inches 1 inch

Question 31

Large sections of woods more than ___ inches thick can have more fire resistance than exposed steel.

Answer 31

6 inches

Question 32

___ is composed of masonry load bearing walls with wood joisted floors and wood roof.

Answer 32

Ordinary construction

Question 33

Type III: Ordinary... Load earring walls consist of brick, concrete block, or both. The thickness of the walls can vary from ___ to ___ inches.

Answer 33

6 to 30 inches

Question 34

Type III: Ordinary... They typically run ___ to ___ stories tall, although they have been built to heights of ___ stories.

Answer 34

1 to 3 stories 10 stories

Question 35

Fire cut joists have a ___ cut on them.

Answer 35

30°

Question 36

The ordinary construction building has the load bearing wall along the ___ part of the building.

Answer 36

Longest

Question 37

This device is used to spread a load between two or more structural members.

Answer 37

Spreader

Question 38

There are ___ types of spreaders.

Answer 38

2

Question 39

Spreaders... A rod or cable runs parallel to the joists and ties the wall together to increase the stability of either or both walls.

Answer 39

Type 1

Question 40

Spreaders... Tensile members, rod or cable, run perpendicular to the joists and tie the first 3 or 4 joists to the wall. May be part of an original design of heavy timber building, or they may be added to a building to support a weak wall.

Answer 40

Type 2

Question 41

Employs building materials that will not add to the fire development, but that can suffer from the effects of fire.

Answer 41

Type II : non combustible

Question 42

The invention of steel and the use of steel as a building material began the era of ___ buildings.

Answer 42

Fire resistive

Question 43

Rule of thumb for expansion of steel is ___.

Answer 43

1 inch for every 10 feet at approx 800°F

Question 44

Can be used in all 5 types of construction.

Answer 44

Truss construction

Question 45

Top chord is ___ and the bottom chord is in ___.

Answer 45

Compressed Tension

Question 46

Top and bottom members are called chords, inside members are called ___, tied together with connecting members called ties, and connections are called panel points.

Answer 46

Web

Question 47

The most dangerous truss is the ___ truss.

Answer 47

Bowstring truss

Question 48

The most common truss for roof construction is the ___ truss.

Answer 48

Peaked roof

Question 49

The truss is triangular in shape to provide the peaked roof. The trusses are placed close together ___ to ___ inches on center.

Answer 49

16" to 24"

Question 50

The metal strapping used in truss construction improves the roofs ability to withstand ___ forces.

Answer 50

Lifting

Question 51

The ___ truss is used for both roofs and floors.

Answer 51

Parallel chord

Question 52

Parallel chord trusses used in type 2 commercial structures are typically ___.

Answer 52

All steel

Question 53

___ is the void space between chords of a truss. Becomes the location for electrical wiring, HVAC, and other utilities to be placed.

Answer 53

Interstitial space

Question 54

The steel bar parallel chord truss is used for both roofs and floors in unprotected steel trusses, the steel can begin to lose strength at ___ and fail around ___.

Answer 54

800°F 1000°F

Question 55

Engineered wood I-beam, the top and bottom boards are called ___.

Answer 55

Flanges

Question 56

The top or bottom member of a truss.

Answer 56

Chord

Question 57

The inside members of a the truss.

Answer 57

Web